Hand piece switch adapter



FIG. 1 is a perspective view of the hand piece switch adapter, as seen from the top, front, and right sides, the broken lines shown for illustrative purpose only and forms no part of the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof, the left side elevation being a mirror image;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is an exploded perspective view thereof; and,

FIG. 8 is an exploded top plan view thereof. 

The ornamental design for a hand piece switch adapter, as shown and described. 